Samuel jacobs



(No Model.)

. S. JACOBS.

GAR WHEEL. No. 3'36g050. Patented Feb. 9, 1886..

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NITED STATES PATENT OFFICE.-

SAMUEL JAOOBS, OF BALTIMORE, MARYLAND, ASSIGNOR OF ONE-HALF TO JOSEPH F.MATTHAI, OF SAME PLAGE.

CAR-WHEEL.

SPECIFICATIONforming part of Letters Patent No. 336,050, dated February9. 1886.

Application filed October 15, 1585. Serial No. 179.925. (No model.)

To aZZ whom it may concern:

Beit known that l, SAMUEL JACOBS, a citizen ofthe United Statesresidingat Baltimore, in the State of Maryland, have invented certain new anduseful Improvements in Street- Car Vheels and Rails, of which thefollowing is a specification.

My invention relates to an improved carwheel for street-cars andcombined car-wheel io and rail.

The object of the invention will be hereinafter fully set forth, and itsnature will be fully understood by reference to the accompanyingdrawings, in whichx5 Figure lis a front view of the car-wheel and asection of the rail on which the wheel runs. Fig. 2 is a side view ofthe car-wheel and rail. Fig. 3 is a side view,on a larger scale,of aportion of the car-wheel, showing the serrations 2o on the flange. Fig.4 is a front view of the saine part as seen in Fig. 3. Fig. 5 is a topview of the rail.

The car-wheel A has at its rim a tread, b, and a fiange, c, projectingfrom the center of the tread. In other words, the wheel has a flange,and a tread or face on each side of the flange. It is designed that allthe weight shall be supported by the two treads, or the double tread,resting on the rail, while the central flange, by occupying` a groove inthe rail,will serve simply to retain the wheel on the rail. The centralflange, c, on the tread is V-shaped in cross-section, and the top of therail D has a V-shaped groove, e, to receive this flange.

On each side of the groove is a flat tread-surface, f. A feature of thisV- shaped groove is, that its sides are pitched at a different anglefrom that of the sides of the central iiange on the wheel. Vhile thegroove e at its widest part is just broad enough to receive the broadestpart of the central fiange, c, (see Fig. 1,) its depth is enough greaterto prevent the flange from bearing or having a seat in its bottom. Thisdifference between the pitch of the angular sides of the rail-groove andthose of the wheel-ange, and the fact that the railgroove is deeper thanthe flange, insure that the treads b only of the wheel will bear on thetop surfaces, f, of the rail.

The flange c of the wheel is provided with crosswise serrations,notches, or grooves g on each side. These are to serve for cleaning orfreeing the groove in the rail of dirt, trash, or ice. The wordserration77 is here employed to include any kind of a notch, groove,gain, or cut that may be made crosswise of the sides of the flange.These serrations may extend across the flange in any direction. They mayhave a radial position-that is, be straight across-Tor may have atangential position- 6o that is, extend obliquely across. The latter ispreferred as being especially effective for the purpose named when thewheel is turned in the direction, as indicated by the darts, towardwhich the serrations incline. Crosswise serrations may be appliedtoacar-wheel flange of any shape. Their usefulness is not limited to a Vshape. Neither is their usefulness restricted to a central flange. Theymay be used as well on a wheel with only one tread or face. 7o

The rail D has spike-holes h,which are made through each tread-surfacef, and said holes are located alternately on one and then the othertreadsurface. The rail may be laid in any well-known or desired manner.In the drawings wood stringers t' are shown as supporting the rail, andthe stringers rest on crossties k. The tread-surface of' the rail shouldbe flush or even with the pavement. A rail of this kind will be noobstacle whatever to car- 8o riage-wheels, and it has the advantage overthe English rail with a U-shaped groove, in that carriage-wheels withvery narrow tires cannot sink in this V-shaped groove, while they dosink and sometimes become set or stuck fast in said U-shaped groove.

I am aware that wheels having a central flange and a tread each side ofthe flange are not new, and that it has been proposed to use such wheelson two rails laid side by side. I am also aware that traction-engineshave been provided* with wheels having serrations or teeth across thetread thereof. As heretofore explained, my invention has for its objecta different purpose. 9

Having described my invention, I claim and desire to secure by LettersPatent of the United Statesl. A car-wheel having a V-shaped flangeprovided on its sides with crosswise serrations roo and a tread or faceon each side of' the said flange, in combination with a rail having twotread-surfaoes, f, a V-shaped groove Abetween the surfaces, and a metalbase below the said groove solidly connecting Jthe two surfaces,

y Vthe said rail-groove having its sides pitched at an angle diiferentfrom that of the sides of the. wheel-dange, as Set forth.

f 2. A car-Wheel having a tread or face andad ange projecting therefromprovided. on its.

4L.. hear-wheel havngalread .oi face, .and at thecenterof said tread a,projecting ange I 5 provided on its sides with crosswise serrations, asset forth.

In testimony whereof I affix my signature in presenoeof two witnesses..A, c L

. vSAMUEL JACOBS.

Vitnesses:

JOHN E. MORRIS, JN0. T. MADDOX.

